Stage 7 click-testing fixes (2)

- nodes_controller: permit staged_slug and staged_parent_id in node
  params; these were silently dropped since strong parameters migration,
  breaking the two-phase slug/parent change workflow
- file_attachment: add SVG support; vector files are copied to all style
  directories without rasterisation, preserving scalability in the browser
- assets index/show: constrain image display with max-width/max-height
  via admin.css td img rule; fixes oversized SVG thumbnails while leaving
  raster variants unaffected

4 files changed, 17 insertions, 5 deletions

diff --git a/app/controllers/nodes_controller.rb b/app/controllers/nodes_controller.rb
index bd60b27..494887d 100644
--- a/app/controllers/nodes_controller.rb
+++ b/app/controllers/nodes_controller.rb
@@ -107,7 +107,7 @@ class NodesController < ApplicationController
   private
 
     def node_params
-      params.fetch(:node, {}).permit(:slug, :parent_id)
+      params.fetch(:node, {}).permit(:slug, :parent_id, :staged_slug, :staged_parent_id)
     end
 
     def page_params
diff --git a/app/models/concerns/file_attachment.rb b/app/models/concerns/file_attachment.rb
index e9acda6..0e99fa2 100644
--- a/app/models/concerns/file_attachment.rb
+++ b/app/models/concerns/file_attachment.rb
@@ -28,7 +28,9 @@ module FileAttachment
     headline: { geometry: "460x250!",  format: nil }
   }.freeze
 
-  IMAGE_CONTENT_TYPES = %w[image/jpeg image/gif image/png image/webp].freeze
+  IMAGE_CONTENT_TYPES    = %w[image/jpeg image/gif image/png image/webp].freeze
+  VECTOR_CONTENT_TYPES   = %w[image/svg+xml].freeze
+  DISPLAYABLE_AS_IMAGE   = IMAGE_CONTENT_TYPES + VECTOR_CONTENT_TYPES
 
   included do
     attr_reader :upload
@@ -69,6 +71,8 @@ module FileAttachment
 
     if IMAGE_CONTENT_TYPES.include?(upload_content_type)
       generate_variants(original_path)
+    elsif VECTOR_CONTENT_TYPES.include?(upload_content_type)
+      generate_svg_variants(original_path)
     end
   end
 
@@ -80,6 +84,14 @@ module FileAttachment
     end
   end
 
+  def generate_svg_variants(original_path)
+    STYLES.each do |style, _|
+      dest_path = file_path(style)
+      FileUtils.mkdir_p(File.dirname(dest_path))
+      FileUtils.cp(original_path, dest_path)
+    end
+  end
+
   def delete_upload_files
     dir = Rails.root.join("public", "system", "uploads", id.to_s)
     FileUtils.rm_rf(dir) if Dir.exist?(dir)
diff --git a/app/views/assets/index.html.erb b/app/views/assets/index.html.erb
index 83d55c2..51fc486 100644
--- a/app/views/assets/index.html.erb
+++ b/app/views/assets/index.html.erb
@@ -10,7 +10,7 @@
   </tr>
 <% @assets.each do |asset| %>
   <tr>
-    <td><%= image_tag asset.upload.url(:thumb) %></td>
+    <td><%= image_tag asset.upload.url(:thumb), style: "max-width: 100px; max-height: 100px;" %></td>
     <td><%= link_to asset.name, asset.upload.url %></td>
     <td><%= asset.upload.content_type %></td>
     <td><%= link_to 'Show', asset %></td>
diff --git a/app/views/assets/show.html.erb b/app/views/assets/show.html.erb
index a64987c..694be5a 100644
--- a/app/views/assets/show.html.erb
+++ b/app/views/assets/show.html.erb
@@ -6,7 +6,7 @@
 <table>
   <tr>
     <td>Thumbnail</td>
-    <td><%= image_tag @asset.upload.url(:medium) %></td>
+    <td><%= image_tag @asset.upload.url(:medium), style: "max-width: 300px; max-height: 300px;" %></td>
   </tr>
   <tr>
     <td>Public Path</td>
@@ -20,4 +20,4 @@
     <td>Size</td>
     <td><%= "#{@asset.upload.size/1024} KB" %></td>
   </tr>
-</table>
\ No newline at end of file
+</table>